1 files changed, 252 insertions, 0 deletions
diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/hmac/hmac.c b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/hmac/hmac.c
new file mode 100644
index 000000000..5e087bf92
--- /dev/null
+++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/hmac/hmac.c
@@ -0,0 +1,252 @@
+/*
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "internal/cryptlib.h"
+#include <openssl/hmac.h>
+#include <openssl/opensslconf.h>
+#include "hmac_local.h"
+
+int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
+                 const EVP_MD *md, ENGINE *impl)
+{
+    int rv = 0, reset = 0;
+    int i, j;
+    unsigned char pad[HMAC_MAX_MD_CBLOCK_SIZE];
+    unsigned int keytmp_length;
+    unsigned char keytmp[HMAC_MAX_MD_CBLOCK_SIZE];
+
+    /* If we are changing MD then we must have a key */
+    if (md != NULL && md != ctx->md && (key == NULL || len < 0))
+        return 0;
+
+    if (md != NULL) {
+        ctx->md = md;
+    } else if (ctx->md) {
+        md = ctx->md;
+    } else {
+        return 0;
+    }
+
+    /*
+     * The HMAC construction is not allowed  to be used with the
+     * extendable-output functions (XOF) shake128 and shake256.
+     */
+    if ((EVP_MD_meth_get_flags(md) & EVP_MD_FLAG_XOF) != 0)
+        return 0;
+
+    if (key != NULL) {
+        reset = 1;
+
+        j = EVP_MD_block_size(md);
+        if (!ossl_assert(j <= (int)sizeof(keytmp)))
+            return 0;
+        if (j < len) {
+            if (!EVP_DigestInit_ex(ctx->md_ctx, md, impl)
+                    || !EVP_DigestUpdate(ctx->md_ctx, key, len)
+                    || !EVP_DigestFinal_ex(ctx->md_ctx, keytmp,
+                                           &keytmp_length))
+                return 0;
+        } else {
+            if (len < 0 || len > (int)sizeof(keytmp))
+                return 0;
+            memcpy(keytmp, key, len);
+            keytmp_length = len;
+        }
+        if (keytmp_length != HMAC_MAX_MD_CBLOCK_SIZE)
+            memset(&keytmp[keytmp_length], 0,
+                   HMAC_MAX_MD_CBLOCK_SIZE - keytmp_length);
+
+        for (i = 0; i < HMAC_MAX_MD_CBLOCK_SIZE; i++)
+            pad[i] = 0x36 ^ keytmp[i];
+        if (!EVP_DigestInit_ex(ctx->i_ctx, md, impl)
+                || !EVP_DigestUpdate(ctx->i_ctx, pad, EVP_MD_block_size(md)))
+            goto err;
+
+        for (i = 0; i < HMAC_MAX_MD_CBLOCK_SIZE; i++)
+            pad[i] = 0x5c ^ keytmp[i];
+        if (!EVP_DigestInit_ex(ctx->o_ctx, md, impl)
+                || !EVP_DigestUpdate(ctx->o_ctx, pad, EVP_MD_block_size(md)))
+            goto err;
+    }
+    if (!EVP_MD_CTX_copy_ex(ctx->md_ctx, ctx->i_ctx))
+        goto err;
+    rv = 1;
+ err:
+    if (reset) {
+        OPENSSL_cleanse(keytmp, sizeof(keytmp));
+        OPENSSL_cleanse(pad, sizeof(pad));
+    }
+    return rv;
+}
+
+#if OPENSSL_API_COMPAT < 0x10100000L
+int HMAC_Init(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md)
+{
+    if (key && md)
+        HMAC_CTX_reset(ctx);
+    return HMAC_Init_ex(ctx, key, len, md, NULL);
+}
+#endif
+
+int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len)
+{
+    if (!ctx->md)
+        return 0;
+    return EVP_DigestUpdate(ctx->md_ctx, data, len);
+}
+
+int HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len)
+{
+    unsigned int i;
+    unsigned char buf[EVP_MAX_MD_SIZE];
+
+    if (!ctx->md)
+        goto err;
+
+    if (!EVP_DigestFinal_ex(ctx->md_ctx, buf, &i))
+        goto err;
+    if (!EVP_MD_CTX_copy_ex(ctx->md_ctx, ctx->o_ctx))
+        goto err;
+    if (!EVP_DigestUpdate(ctx->md_ctx, buf, i))
+        goto err;
+    if (!EVP_DigestFinal_ex(ctx->md_ctx, md, len))
+        goto err;
+    return 1;
+ err:
+    return 0;
+}
+
+size_t HMAC_size(const HMAC_CTX *ctx)
+{
+    int size = EVP_MD_size((ctx)->md);
+
+    return (size < 0) ? 0 : size;
+}
+
+HMAC_CTX *HMAC_CTX_new(void)
+{
+    HMAC_CTX *ctx = OPENSSL_zalloc(sizeof(HMAC_CTX));
+
+    if (ctx != NULL) {
+        if (!HMAC_CTX_reset(ctx)) {
+            HMAC_CTX_free(ctx);
+            return NULL;
+        }
+    }
+    return ctx;
+}
+
+static void hmac_ctx_cleanup(HMAC_CTX *ctx)
+{
+    EVP_MD_CTX_reset(ctx->i_ctx);
+    EVP_MD_CTX_reset(ctx->o_ctx);
+    EVP_MD_CTX_reset(ctx->md_ctx);
+    ctx->md = NULL;
+}
+
+void HMAC_CTX_free(HMAC_CTX *ctx)
+{
+    if (ctx != NULL) {
+        hmac_ctx_cleanup(ctx);
+        EVP_MD_CTX_free(ctx->i_ctx);
+        EVP_MD_CTX_free(ctx->o_ctx);
+        EVP_MD_CTX_free(ctx->md_ctx);
+        OPENSSL_free(ctx);
+    }
+}
+
+static int hmac_ctx_alloc_mds(HMAC_CTX *ctx)
+{
+    if (ctx->i_ctx == NULL)
+        ctx->i_ctx = EVP_MD_CTX_new();
+    if (ctx->i_ctx == NULL)
+        return 0;
+    if (ctx->o_ctx == NULL)
+        ctx->o_ctx = EVP_MD_CTX_new();
+    if (ctx->o_ctx == NULL)
+        return 0;
+    if (ctx->md_ctx == NULL)
+        ctx->md_ctx = EVP_MD_CTX_new();
+    if (ctx->md_ctx == NULL)
+        return 0;
+    return 1;
+}
+
+int HMAC_CTX_reset(HMAC_CTX *ctx)
+{
+    hmac_ctx_cleanup(ctx);
+    if (!hmac_ctx_alloc_mds(ctx)) {
+        hmac_ctx_cleanup(ctx);
+        return 0;
+    }
+    return 1;
+}
+
+int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx)
+{
+    if (!hmac_ctx_alloc_mds(dctx))
+        goto err;
+    if (!EVP_MD_CTX_copy_ex(dctx->i_ctx, sctx->i_ctx))
+        goto err;
+    if (!EVP_MD_CTX_copy_ex(dctx->o_ctx, sctx->o_ctx))
+        goto err;
+    if (!EVP_MD_CTX_copy_ex(dctx->md_ctx, sctx->md_ctx))
+        goto err;
+    dctx->md = sctx->md;
+    return 1;
+ err:
+    hmac_ctx_cleanup(dctx);
+    return 0;
+}
+
+unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len,
+                    const unsigned char *d, size_t n, unsigned char *md,
+                    unsigned int *md_len)
+{
+    HMAC_CTX *c = NULL;
+    static unsigned char m[EVP_MAX_MD_SIZE];
+    static const unsigned char dummy_key[1] = {'\0'};
+
+    if (md == NULL)
+        md = m;
+    if ((c = HMAC_CTX_new()) == NULL)
+        goto err;
+
+    /* For HMAC_Init_ex, NULL key signals reuse. */
+    if (key == NULL && key_len == 0) {
+        key = dummy_key;
+    }
+
+    if (!HMAC_Init_ex(c, key, key_len, evp_md, NULL))
+        goto err;
+    if (!HMAC_Update(c, d, n))
+        goto err;
+    if (!HMAC_Final(c, md, md_len))
+        goto err;
+    HMAC_CTX_free(c);
+    return md;
+ err:
+    HMAC_CTX_free(c);
+    return NULL;
+}
+
+void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
+{
+    EVP_MD_CTX_set_flags(ctx->i_ctx, flags);
+    EVP_MD_CTX_set_flags(ctx->o_ctx, flags);
+    EVP_MD_CTX_set_flags(ctx->md_ctx, flags);
+}
+
+const EVP_MD *HMAC_CTX_get_md(const HMAC_CTX *ctx)
+{
+    return ctx->md;
+}